Lewis leigh



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LEWIS LEIG'H, or .BRIDCEPCRr CONNECTICUT.

Letters Patent No. 72,868, dated December 31, 1867.

IMPBOVEMBN IN GLOBE-VALVES.

TO ALL WHOM IT MAY CONCERN:

Be it known that I,'LEWIS LIGH, of Bridgeport, in the State of Connecticut, have invented, made, and applied to use a certain new and useful Improvement in Globe-Valves; and I do hereby declare the following to be a full, clear, and exact description of the said invention, reference being had to the annexed drawing, makingpartof this specification, wherein- Figure 1 is a vertical section of a globe-valve with my improved attachment,

Figure 2 isa view of thel 'endof the spring friction-clamp, and

.Figure 3 is an inverted plan of the socket on the spring, taking the polygonal stamping-box.

Similar marks of reference denote the s ame parts.

Heretofore globe-valves have been made with a screw that acts upon the valve itself, and this is generally moved by a wheel.v In practice it is found that the movement ofthe pipe, from vibration ofthe engine or other machinery, isapt to cause the screw to turn, and either open or partially close the valve, thus "arying the. quantity of steam or water allowed to pass through the valve-seat.

My invention is to obviate thc before-mentioned diculty, and consists in a spring friction-clamp, applied to the wheel of the valve in such amanner as not to interfere with the turning of said wheel by hand in either direction, but to prevent the turning of said wheel and its screw by accident or vibration In the drawing, zis the globe or case of the valve, provided .with couplings for connection to a pipe, and with a diaphragm in the interior, in which is the seat b for the valve e. d is' the spindle and screw, e the wheel by which the spindle is' turned, and j' the stuHing-hox cap, all made in any usual manner, and of the desired size. g is a spring, surrounding the spindle d, between the stuHng-box f and hand-wheel e; and attached to one end of saidl spring g is a sock-enit, with a polygonal recess corresponding to and setting over the polygonal exterior surface of the stufiing-box cap f, so that the spring cannot be turned around, and at the other end `the spiral or helical spring gis provided with a friction-clamp z', having a recessed surface to receive the hub of the Wheel e, and with an undulating rim around said recess, as at 2, (see fig. 2,) that corresponds withthe arms ofA the wheel e. This clamp A7,' is alsov attached to the springg so that itwill not turn around, but by its undulating rim hold the Wheel e from turning accidentally, or by a jar; but at the same time the undulations are suiiicicntly small to allow the wheel e to be turned by hand, the spring yielding as the armspass over the undula- ,l

tions, and also causing the clamp to remain in contact with the wheel, whether that be screwed-in or 'out-"with the spindle and valve.

What I'claim, and desire to secure by Letters Patent, is-

'lhe spring g, with the socket z and clamp z' applied around the valve-stem between the stulng-boie and. the hand-wheel, as and for the purposes set forth.

In witness whereof, I have hereunto set my signature, this 23d day of September, A. D. 1867.y

LEWIS LEIGH.

Witnesses:

HENRY GARDNER, GEO. W. WARNER. 

